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104results about How to "Reliable input" patented technology

Visual input pointing device for interactive display system

An interactive presentation system uses a presentation computer, a computer-controlled image projector and a projection screen, in which control of the presentation computer is accomplished by using a wireless optical pointer that projects an encoded control cursor onto the projection screen. The projected screen images are monitored by a video camera, and the control cursor is scanned, detected and decoded for emulating various keyboard commands and / or pointing device (mouse, touch pad, track ball) position-dependent cursor operations. The control cursor is reliably detected and its coordinate location is accurately determined on the basis of one or more primary image attributes, for example image intensity and image repetition rate, both of which are independent of monitoring angles and pointing device projection angles, and one or more secondary image attributes, for example image size, color and pattern. Neither of the primary attributes can be masked or obscured by the presence of background screen images or objects. Although the secondary attributes of the control cursor may be identical with the attributes of background images, reliable decoding of a computer command is assured since analysis and decoding of the secondary attributes are conditionally performed only after the control cursor image has been detected and captured (stored in memory for determination of coordinate location) on the basis of one or more of the independent attributes.
Owner:KEYTEC

Personate photograph producing method used for keep input secret and method of use thereof

InactiveCN101162489ATo achieve the purpose of safe and confidential inputInput securityInternal/peripheral component protectionComputer graphics (images)Computer science
The invention discloses a generation method and a use method of camouflage picture used in secure input, wherein, a credible machine can be preinstalled with a background picture, a conceptual picture and corresponding conceptual information through other machines; moreover, the conceptual picture and corresponding conceptual information are concealed in the background picture in random distribution; the corresponding relation of the coordinate region and the conceptual information of the conceptual picture is stored to form a camouflage picture; in addition, a camouflage picture preappointed with a person knowing the range is generated through creating concealed appointment mode between an operator and the credible machine. During use, the credible machine which displays a combined camouflage picture and clicks the corresponding area on another machine through a driver judges the character to be input by the operator according to the returned click position coordinate; therefore, the credible machine realizes information input by certain means. Through adopting the camouflage picture based on image, the invention determines the input content through clicking corresponding image position information in the picture by a mouse keystroke; therefore, secure input for computer is realized along with convenience and shortcut in use.
Owner:姚华

UPS (Uninterrupted Power System)

The invention discloses a UPS (Uninterrupted Power System), and the system comprises an air circuit breaker Q1, an air circuit breaker Q2, a maintenance bypass air switch Q3BP, a bypass static switch, a rectification module REC, an inversion module INV, an output isolation transformer TR2, a main circuit static switch, an air circuit breaker Q5, a contact-type normally-opened contact KM, and a storage battery. A main input circuit AC power supply is inputted from the air circuit breaker Q1, and the AC power supply is converted into a DC power supply through the rectification module REC, thereby completing the AC/DC conversion, so as to charge the storage battery in parallel connection with a main input circuit and to provide a reliable input direct current for the inversion module INV. The inversion module INV carries out the DC/AC conversion, and converts the DC power supply provided by the rectification module REC and the storage battery into the AC power supply. The AC power supply is outputted through the output isolation transformer TR2. A bypass input power supply is inputted from the air circuit breaker Q2, and is controlled by the bypass static switch and then is outputted. The UPS is stable in voltage, is quick and efficient, is simple in operation, and is convenient to maintain.
Owner:合肥新文远信息技术有限公司

Precise determination method of extreme working conditions of external heat flow of orbit of remote sensor in whole life cycle

The invention discloses a precise determination method of extreme working conditions of external heat flow of an orbit of a remote sensor in a whole life cycle, and belongs to the technical field of precise heat control of spatial optical remote sensors. The method specifically includes: 1), selecting parts, which are on a satellite and block the external heat flow of a light entrance of the remote sensor, and parts which are inside the remote sensor and in radiation heat exchange with an optical lens, ignoring radiation, heat capacity and heat conductivity of the back of the optical lens, andestablishing a finite-element heat model of the remote sensor; (2), adopting heat analysis software to calculate temperature of all finite-element nodes of the finite-element heat model of the remotesensor in the whole life cycle according to the preset orbit, and extracting temperature of each finite-element node of the optical lens of the remote sensor in the whole life cycle therefrom; and (3), calculating external heat flow absorbed by each finite-element node of the optical lens of the remote sensor in the whole life cycle according to temperature of the optical lens of the remote sensor in the whole life cycle, and selecting extremum values of the external heat flow to determine the extreme working conditions of the external heat flow of the orbit of the remote sensor in the wholelife cycle. According to the method, calculation is comprehensive, efficiency is high, and precision is high.
Owner:BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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